chore: prepare GoodBuddy 0.12.0 release

Update the desktop version, approved bilingual release notes, and synchronized English and Chinese feature matrices for the 0.12.0 candidate.

Release preparation now runs local tests, type checks, and lint without a local production build, then requires the main-branch CI build before tagging. The package matrix uses a native Windows arm64 runner and validates managed Python on every target without adding extra license files to the desktop package.

.github/workflows/packages.yml

@@ -130,7 +130,7 @@ jobs:
             runner: windows-2025
           - platform: windows
             arch: arm64
-            runner: windows-2025
+            runner: windows-11-vs2026-arm
           - platform: macos
             arch: x64
             runner: macos-15-intel
@@ -174,6 +174,14 @@ jobs:
           name: goodbuddy-production-bundle
           path: out
 
+      - name: Verify native runner architecture
+        run: node -e "if(process.arch !== '${{ matrix.arch }}'){throw new Error('Expected ${{ matrix.arch }} runner, received '+process.arch)}"
+
+      - name: Install and validate managed Python
+        run: npm exec vitest run tests/local-tool-environment-live.test.ts
+        env:
+          GOODBUDDY_RUN_LIVE_TOOL_ENVIRONMENT: '1'
+
       - name: Install RPM packaging tools
         if: matrix.platform == 'linux'
         shell: bash